Montana HVAC Pros
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Water Heater Repair in Ennis, MT

Tell us what your water heater is doing, and a licensed contractor who covers Madison County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
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Cold groundwater and long winters wear a water heater down early here

Your water heater in Ennis works against cold incoming water for most of the year. Heat is on in homes here from August through June, and winter nights average 14°F from December through February. The tank has to work harder and longer to bring that water up to temperature, and the heating element or burner cycles more to keep up.

The area has also logged 74 winter storms and 83 damaging wind events over the past ten years, and statewide, about 18% of households lost power for at least 24 hours in 2024. A gas water heater with a standing pilot will keep running through an outage. One with electronic ignition will not relight until power is back, and you will notice it as a tank full of cold water.

14°F
the average winter night, and colder incoming water means longer heating
11 months
August through June, the months homes here need heat
18%
of Montana households lost power for a day or more in 2024, and a heater with an electric element or electric ignition stops without it
Isometric cutaway illustration of a small gray house showing interior rooms with a cylindrical water heater and pipes, two sinks, a bathroom, and a bed, under a dark shingled roof with a chimney.
Your water heater works hardest from October through April.

NOAA nClimDiv, 1991–2020 normals

Why is my water heater leaking from the bottom?
The most common reason is that the tank itself has rusted through and is failing. Water heater tanks have a glass lining that protects the steel underneath, and once that lining cracks, rust eats through the metal and water works its way out the bottom. It can also be a loose drain valve or a fitting that has failed, which a contractor can check and replace. But if the tank itself is leaking, it needs to be replaced, not repaired.
Why won't the pilot light on my water heater stay lit?
Usually the thermocouple has worn out and can no longer sense that the pilot is burning, so it shuts the gas off. A dirty pilot orifice or a draft pulling the flame away from the sensor can cause the same thing. A weak or failing thermocouple is easy to replace and is the first thing a contractor will check.
Can a tankless water heater be repaired?
Yes, most tankless water heater problems are repairable. The heat exchanger, the igniter, and the flow sensor can all fail on their own without the whole unit needing to be replaced. Mineral buildup inside the heat exchanger is also common and can usually be flushed out rather than replaced. A contractor can test the unit's error codes to find out which part is causing the problem.